<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div{
				width: 300px;
				height: 300px;
				border-top:5px red dotted;
				border-right: #FFFF00 10px dashed;
				border-bottom: #0000FF 15px solid;
				border-left: grey 20px double;
				margin: 100px;
				padding: 100px;
			}
		</style>
	</head>
	<body>
		<div>
			我是奶龙
		</div>
	</body>
</html>
